Finding the Fourth Proportional to 235,709.52, 353,097.72 and 206,160.72

Step by Step Solution

1. Step 1: Write the proportion equation
   235,709.52 : 353,097.72 = 206,160.72 : x
2. Step 2: Convert to fraction form
   235,709.52/353,097.72 = 206,160.72/x
3. Step 3: Cross multiply
   235,709.52x = 353,097.72 × 206,160.72
4. Step 4: Simplify right side
   235,709.52x = 72,794,880,185.56
5. Step 5: Solve for x
   x = 72,794,880,185.56/235,709.52
6. Step 6: Final answer
   x = 308,833.01